نتایج جستجو برای: static magnetic fields

تعداد نتایج: 634821  

2008
X. P. You G. B. Hobbs W. A. Coles

Variations in the solar wind density introduce variable delays into pulsar timing observations. Current pulsar timing analysis programs only implement simple models of the solar wind, which not only limit the timing accuracy, but can also affect measurements of pulsar rotational, astrometric and orbital parameters. We describe a new model of the solar wind electron density content which uses ob...

2017

Preparing equipment for transport is one of the core aspects that should be considered by transporter. Storing digital evidence requires extensive care in order to prevent damage of electronic evidence. Digital evidence is sensitive to magnetic fields thus it should be stored in the right manner. When documenting evidence, responder should be cautious of things such as temperature, static elect...

Bahram Dalir Naghadeh Ghader Rezazadeh Mahsa Ajodani Siamak Saifzadeh,

Objective- Although the promotional effects on bone healing of pulsed electromagnetic fields (PEMF)have been well demonstrated, the effects of static magnetic fields (SMF) remained unclear. In this study,effects of SMFs on clinical and biomechanical aspects of bone healing using a canine unstable osteotomygap model were investigated .Design- Prospective descriptive trial.Animals- Fifteen mongre...

2017
Xiaowei Zuo Lin Zhang Engang Wang

Influence of external static magnetic fields on solidification, solid phase transformation of metallic materials have been reviewed in terms of Lorentz force, convection, magnetization, orientation, diffusion, and so on. However, the influence of external static magnetic fields on properties of metallic functional materials is rarely reviewed. In this paper, the effect of static magnetic fields...

Journal: :Journal of magnetic resonance imaging : JMRI 2011
Angela Heinrich Anne Szostek Frauke Nees Patric Meyer Wolfhard Semmler Herta Flor

To evaluate whether cognitive processes, sensory perception, and vital signs might be influenced by static magnetic fields in magnetic resonance imaging (MRI), which could pose a risk for health personnel and patients, we conducted a meta-analysis of studies that examined effects of static magnetic fields. Studies covering the time from 1992 to 2007 were selected. Cohen's d effects sizes were u...

Journal: :فیزیک زمین و فضا 0
محمدجواد کلایی موسسه ژئوفیزیک دانشگاه تهران امین اسماعیلی پسا دکتری

one of the most important advantages of particle simulation as compared to fluid simulation is the capacity for working with and tracing particles. in particle simulations, the test particle method is usually used to get some idea of the behavior of plasma or other substances. in this method, first, a small number of particles are injected into the frame of static electromagnetic fields. then, ...

2016
Katarzyna Pawłowska-Góral Magdalena Kimsa-Dudek Agnieszka Synowiec-Wojtarowicz Joanna Orchel Marek Glinka Stanisław Gawron

The available evidence from in vitro and in vivo studies is deemed not sufficient to draw conclusions about the potential health effects of static magnetic field (SMF) exposure. Therefore, the aim of the present study was to determine the influence of static magnetic fields and phloretin on the redox homeostasis of human dermal fibroblasts. Control fibroblasts and fibroblasts treated with phlor...

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